Rotary valve for internal-combustion engines.



w. H. OLEGG.

ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUG. 13, 1910. 980,76 1 Patented Jan. 3, 1911.

f5 19 w 23 26 11 423 21 a g g n 14 9 0 l A I q J .3 WIFEEEMEE {m m H. GLEGG. ROTARY VALVE FOR INTERNAL COMBUSTION ENGINES.

APPLIUATION FILED AUG. 13, 1 910.

980,761. Patented Jams, 1911.

2 SHEETS-SHEET 2.

UNITED snares PATENT OFFICE.

WILLIAM HENRY- CLEG-G, OF NEIVTOWN, BURNLEY, ENGLAND, ASSIGIYOR TO THE CLEGG ENGINE SYNDICATE LIMITED, F BURNLEY, .ENGLAND.

ROTARY VALVE FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent. 7

Patented Jan. 3,1911.

Application filed August 13, 1910. Serial No. 577,036.

following is Ia specification.

This invention relates to improved means for controlling the inlet and exhaust of internal combustion engines of the kind in which'a rotary valve member provided with a port or'ports is arranged. in the wall of;

the cylinder of the engine adjacent the head thereof so as to coact with ports in the wall to control the inlet and exhaust of the charge of gas. Valves of this kind as hitherto arranged have suffered from disadvantages due to the difficulty of securely packin the valve member, from the cylinder past the valve during compression and explosion strokes, withoutcausing great frictional resistance to the movements of the valve, due to the large contact surface of the packing and the heavy pressure which it is considered neces:

sary to exertfthereon. This difliculty was increased by the distortion'of the valve ringwhich was liable to be produced by heat and other influences to which it is subjected when working.

In accordance with the present invention the above mentioned disadvantages are avoided by providing an improved form of valve member and of the parts in which it is mounted. In this improved form, grooves concentric with the cylinder are cut 1n each of the annular faces of the valve member and corresponding fannular projections are formed on the ad acent stationaryparts of the cylinder structure "so that the grooves and rings intermesh'whenthe valve member is in position. The valve member and 4 stat onary intermeshing parts are.

rings on one end of the referor the es may be cut inlet and 'outlet' of ithe gas radially through them at appropriate points.

The above described inethod of forming the valve has the advantage of providing,

a member which, @being of considerable thickness, is naturally unduly heavy, and is adapted to resist distortion and in this it is assisted by the acin the Kingdom of.

-so as to prevent lea agev "on the corresponding stiff, without being which serve as guides, supporting the rin over a large area. Atthe same time th improved construction provides secure pa ing against leakage from the cylinder past the valve while frictional resistance to the movement of the valve is minimized by the .almost entire absence of unbalanced pressure between the surfaces of the, valve and the parts in which it is mounted, this being assisted by, the presence of a film of 'oil the working surfaces. The'prese'nce of this film of oil also assists the prevention of leakage of gas past the valve.

In addition to the features of the improved valve above mentioned others are present and will be brought forward in the following description of an embodiment of the invention which will- ;the invention to a single cylinder four stroke cycle engine. It will however be understood that the invention isa'lso applicable toensix stroke cycle engines.

central section through the. cylinder of the engine taken on the line 1-1 of Fig. 2, and Fig. 2 is a horizontal section taken on the line 2-2 of-Fig. 1.

The cylinder structure shown in the drawings is of the kind in which the cylinder body is provided with a detachable head which is pierced to provide inlet and exhaust apertures, formedand arranged that a space is provided between them for the insertion of the valve member which is adapted to be rotated in this space by suitable gearing.

Theeylinder body is indicated by the numeral 3 and the detachable head by 4. Through the latter extend passages 5 and 6 serving for the" exhaust and inlet of the gases respectively,

number of deep grooves concentric with the bore of the cylinder leai'ihg a number of rings 7. In theconstruction illustrated, two of these rings are shown. On the adjacent part of the head 4 a series of grooves and rings isalso formed, but in this. case the rings 8 are of much smaller dimensions ax1- 1 ally than the rings 7 In the space between provided by the lubricating system between now be given with reference to the accompanying drawings. I; These drawings illustrate the application of gines'of other types, for instance, to twd or" In these drawings :Figure lis a vertical the head and body being so tion of the parts in which it ismountej I In the end of the cylinder wall are-cuta I means for rotating said member, said mem- Iber having on one of its annular faces concentric pro ecting rings, and the ad acent stationary part having a similarv set of concentric projecting rings arranged so as to intermesh with the rings on said valve member, the rings of these two sets being pierced to provide ports which are adapted to come into and out of register as the valve member rotates. I

2.- A valve arrangement for lnternal combustion engines. comprising a cylinder structure consisting of a wall and a head adapted I head fitting on one end thereof, ports in said structure, a ported annular valve member means for rotating said member, said member having on each of its annular faces conlying between said head and said wall and centric projecting rings and said wall and j on said valve member, a second annularmember mounted on said valve member so .as to rotate therewlth, means for .presslng said second annular member against the ad to fit on one end of said wall, an annularjacent stationary part of the cylinder strucvalve member working between said head and said wall and means for rotating said valve member, said valve member having on each of its annular faces a set of concentric projecting rings, the parts of-the wall and head between which the valve member lies being each provided with a set of projecting concentric rings intermeshing with the rings on the valve member, one of said sets of stationary rings being pierced to form ports and the corresponding set of rings on the valve member being also pierced-to provide a port adapted to'come into register with the stationary ports as the valve member is rotated.

,3. In an internal combustion engine a cylinder structure consistingof a wall and I .a head attached to one end of said wall, an annular valve member lying between said wall, and said head, means for rotating said member,a'set of pro ectin concentrlc rings on each end of said .mem er, a s1m1lar set of rings on the cylinder wall and on thehead arranged so as to intermesh with the rings on the valve member, ports'formedfin one of the stationary set of rings and a port formed in the rotating set of rings inter.-'

' 'meshi therewith, faced rings mounted on some o the rings of the last mentioned, set so as to have an easy fit thereon and to be. rotated therewith.

4. A valve arrangement for internal com bustion engines comprising a cyhnder structure consisting of'a cyliiidrical wall and a v ture, and packlng means located between memben.

5. A v'alve arrangement for lnternal comture consisting of a cylindricalwall and a head fitting on one end thereof, ports in sald structure, a ported annular valve memsaid member having on each of its annular j acent the valve member concentric projectte eth connectedwith the valve member, a

means ,for ibtating said pinion, a second annular member mounted on the valve member member, means for. pressing said annular member .into engagement with the adjacent statlonarypart of the cylinder structure and teeth.

In witness whereof, I have hereunto signed my name this 5.dayof August 1910,

WILLIAM HENRY CLEGG. Witnesses:

RICHARD L. CLEAvnR, R emann WILLIS WILLIAMS.

the valve member and said second annfilar bustion engines comprising a cylinder strucber lying between said head and said wall,

faces concentric projecting rings and said. wall and', head havmg on their faces ad-' 75 ing rings arranged so as to intermesh with f the rings on saldvalve member, a-ring of within the ring of teeth, means for rotatingvsaid .second annular member With the valve pinion gearing with said ring of teeth and packing means located between said annular member and the rear face of the ring of in the presence of two subscribing witnesses. 

